Supplementary Material: Quantitative Stochastic Stress Testing and Monte Carlo Audit of North Sydney Council's Long-Term Financial Plan

This dataset and reproducible R code present a stochastic Monte Carlo stress testing framework (N = 10,000 iterations) evaluating North Sydney Council's Long-Term Financial Plan (LTFP) for FY2028–29 following the proposed 52.66% Special Variation (SV) rate increase. The simulation models joint parameter uncertainty across cost inflation (CPI), debt refinancing interest rates ($56.5M principal), and capital project cost overruns ($15.7M annual renewal). The primary quantitative finding reveals a 23.58% probability of structural operating deficit despite full revenue implementation.